Spring bed-bottom.



Patented July 27, 1915.

Z-S HEETSSHEET F. M. LQVERlNGf SPRING BED BOTTOM- APPLICATION FILED NOV. 5. 1914.

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Wilmeoom F. M. LOVERING.

SPRING BED BOTTOM. APPL'CATION man NOV. 5'. 19M.

Patented July 1915;-

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2 SHEETS-SHEET 2.

a To all whom it may concern ream: 'iuonmri. memeame mama.

srmr'rs 'BEniiaorroMf iami. I

'Be it ,knownthat I, FRANK MORRILL Lov- .ERING, a citizen'of the United States of America, and a resident of Bangor, in the county of Penobscot and State of .Maine, have invented certain new and useful Improvements in Spring Bed-Bottoms, whereof the following is a specification. This invention relates tospring bed bot toms of the link and plate type of fabric connected to the frame by horizontal coiled springs. I

The principal object of the inventionis to avoid saggingat the center of the mattress or bed bottom without interference with a proper elasticity thereof.

Figure 1 of the accompanying drawlngs represents a plan of a plate link and spring bed bottom containing an embodiment of this invention, parts thereof being broken out for convenience of illustration. Fig. 2 represents on a larger scale a longitudinal section through portionsof said bed bottom on line 2-2 of Fig. 1. Fig.3 represents on a still larger scale a transverse "section through the central portion of said bedbottom near one end thereof on line 3 3 of Fig. 1, looking toward the left. Fig. A represents on the same scale as Fig. 3;]a trans verse section through'the centralstrands of said bed bottom at about midway thereof on line H of'Fig. 1, looking toward the left.

The same reference'numbers indicate cor-' responding parts in the difierent figures.

The bed bottom herein shown to illustrate the preferred embodiment of this invention comprises two end angle bars 10 and 15 which constitute the frame. These angle bars are of the usual construction, their horizontal flanges being provided respectively with a series of holes 12 and a series of holes 17 for connection of the springs therewith. In this construction the end bar 10 is further provided'with a supplemental central hole 13 and the end bar 15 with a supplemental hole 18.

embodiment referred to is composed of two similar link and plate sections 20 and 30 disposed side by side somewhat apart from each other. Two rows and of horizontal coiled wire springs connect opposite ends of both the sections 20 and 30 with the angle bars 10 and 15;

The section 20 comprises an outer selvage warp strand 21, an inner selvage warp strand Speeiflcationof Letters rat nf,

Application filed November 5.4914. seen in. 379,329.

Patented Julyfl't, 1915.

2 2 a of intermediate warp U strands'23i. Each of the warp strands 21 and 22 is composed-of plates 25, preferably of the usual. triangular construction havin three holesQand wire links 26 of the usua construction disposed I longitudinally and provided with hooks at their opposite ends engaging said plates. 'The intermediate warp strands 23 are composedf of plates 27,

preferably of the usual square construction I having four holes, and similar wirelinks 28 I disposed longitudinally. The transverseor weft strands are formed in the usuaimannerby s1m1lar transverse links .29 disposed transversely and connecting laterally plates of the warp strands. The section '30 in said embodiment'is'of s1m1lar construction to the section 20 having an outer selvage warp strand 31, an inner, selvage' warp strand- 32, and intermediate warp strands 33. The triangular plates 35,

square plates Y37, and links 38 and 39 correspond'to those of the section 20.

The springs 41 and 51 of the rows 40 and 50 are in alinement with the warp strands and are directly connected therewith and alternate springs 42 and 52 of said 'rows'are disposed between said alined springs and indirectly connected withsaid warp strands by means .of V-shaped wire links 43 andj 53 in a known manner. I a

The main sections 20 and'30 are connected by a variably expansible'middle' section composed of rigid parts or links disposed between and connecting the two main sections. This middle section thus constructed maintains an even surface with the connected sections and permits variable spreading of the latter to provide individual independence thereof. This middle section is composed in the illustrated embodiment of diagonal rigid links pivoted at their opposite ends to said main sections respectively. These links are inclined or arranged 'diagonally preferably in opposite directions and I they may be arranged to cross. each other The body of the spring bed bottom in the inpairs. As shown the links 60 are parallel at one incline and the links 65 are parallel at a reversed incline, the links of each pair crossing each other about midway between the adjacent selvage strands 22 and '32 of the respective main sections.

referred to, and by arranging the inner selvage strands of the sections 20 and 30 some- These diagonal links may be of the same construction as the longitudinal and transverse links heretofore what nearer than the other warpstrands are surface throughout and permits the main 55 to one another, these crossed maybe .of th e same length as the other links. The. first pair of'diagonal crossed links 60 and 65 'next. to the end bar 10 connects springs 41 of salvage-strands 22 and 32 with the first triangular plates of said strands,- and the second pair of diagonal crossed links 60 and 65-connects said first triangular piateswith the second triangular plates of said'strands,

and soon. This diagonal'arrangement of the .lin'ksof the middle connecting section permits more or-less lateral expansion and --.contraction' and this lateral expansibility is variable throughout the .length of the middle section and 'alsofva'ries in different parts thereof, being greater at the center and tapering therefrom towardthe ends of the bed bottom.

" A reinforcing elastic center rod 70 is dis-' posed in the space between the main sec-- tionsand in engagement with the intermediate connecting section and extends- ]5 fromend to endof the bed bottom. This -2 center rod is preferably constructed of several parts, as for instance, a central part 73 ;'and.'endparts 7 5'and 76. The central part- 1 '73'maybe-cbmposed ofxme piece or link-of erably at the-crossing points thereof. In

' wire having eyes 71 and72 and the end parts175 and 76 may be composed of coiled springs connecting the opposite .ends'or eyes- 71 .and72 of said center part with the central holes 13 and 18 of said end bars. These springs constituting elastic end mem-- bers of saidfrod are preferably somewhat longer than the springs of the warp strands and the coils thereof may be larger than the coils of 'said warp strand springs. This. center rod passes under some of 'thediago the preferred form as shown in Figs.,1 and 2, two. pairs more or less of the crossed links I 5 at the-center pass under the rod 70 and the other groups of diagonal links rest on said rod. This construction connects the center rod and the bed bottom so that they rise and I fall in unison.

reinforced against sagging at the center and yet has therequired elasticity. The vari- Abed bottom embodying this invention is ably expansible middle section composed of rigid links disposed between and connectingthe two main sections secures a uniform .-:.Gopies of this patent may be obtained for sections to act independently of each other.

'ing said bodysections with said end bars,

diagonal links connecting said sections, fand an elastic centerrod disposed between said sections and interwoven with said diagonal links. f

3. In a bed bottom the combination of end bars, two'body sections disposed side by side apart from each other, end springs connecting said sections with said end bars, diagonal crossed links connecting said sections, and "an elastic center rod disposed between saidsections and running under pairs of said crossed links and over other pairs thereof.

4. In a bed bottom the combination of two elastic body sections'disposed side by side apart from each other, means for supportingsuch e n 'ns, and a non-elastic laterally and variably expansible connecting means between said body sections, said connecting means-being composed of rigid parts severally adjustable automatically and independently to a, varying spread between said body sections.

I Y 5., In a bed'bottom the combination of two disposed between said sections and engaging said connectin means. f I FRANK MO RILL, LOVERING. Witnesses:

WILLIAM-O. McNAUeH'roN, v James G. OCoNNoR.

five cents each, by addressing the commissioner of Patents, Washington, D. C." 

